* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden; /* 避免滚动条 */
    margin: 0;
}

#background-video {
    position: fixed; /* 固定定位 */
    top: 50%;
    left: 50%;
    width: 120%; /* 设置为 120% */
    height: 120%; /* 设置为 120% */
    z-index: -1; /* 视频在其他内容下面 */
    transform: translate(-50%, -50%); /* 居中视频 */
}

.container-login {
    width: 30%; /* 占据右侧 1/3 */
    height: calc(100% - 50px);
    display: flex;
    justify-content: center; /* 水平居中 */
    align-items: center; /* 垂直居中 */
    position: relative; /* 相对定位 */
    z-index: 1; /* 提高 z-index */
}

.login-dialog {
    width: 350px;
    padding: 20px; /* 增加内边距 */
    background-color: rgba(255, 255, 255, 0.9); /* 半透明背景 */
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); /* 添加阴影 */
}

.nav {
    position: relative; /* 确保导航在视频上方 */
    z-index: 1; /* 提高 z-index */
    height: 50px;
    width: 100%;
    color: white;
    background-color: rgba(144, 141, 141, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav > img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin: 5px 10px;
}

.nav > .space {
    width: 60%;
    display: inline;
}

.nav > .blog-title {
    width: 100px;
}

.nav > .nav-span {
    width: 80px;
    text-decoration: none;
    color: white;
}

.container {
    width: 800px;
    height: calc(100% - 50px);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.container > .left {
    width: 20%;
    height: 100%;
}

.container > .right {
    width: 79%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.6);
    padding: 20px;
    border-radius: 10px;
    overflow-y: auto;
}

.container > .left > .card {
    width: 100%;
    height: 300px;
    background-color: rgba(255, 255, 255, 0.6);
    padding: 20px;
    text-align: center;
    border-radius: 10px;
}

.left > .card > img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin-bottom: 10px;
}

.left > .card > h3 {
    margin: 10px 0;
}

.left > .card > a {
    color: gray;
    text-decoration: none;
}

.left > .card > .row {
    width: 100px;
    height: 30px;
    margin: 10px 0;
    display: flex;
    justify-content: space-between;
}

.left > .card > .row > span {
    width: 50px;
}